https://survey123.arcgis.com/share/51b7f57044b5402e8f5052e6556ab540
Cyfrifiad Capeli Cymru Census - Aelodau'r Gynulleidfa / Congregation Members
cyfrifiadcymrucensusaelodaucongregation
https://survey123.arcgis.com/share/1a3dcd5f0e854ca3a319cdec3ca2085e
Cyfrifiad Capeli Cymru Census - Cyhoedd / Public
cyfrifiadcymrucensuspublic
https://cy.ons.gov.uk/peoplepopulationandcommunity/populationandmigration/populationestimates/methodologies/userguidetocensus2021origindestinationdataenglandandwales
Canllaw defnyddiwr ar ddata tarddiad-cyrchfan Cyfrifiad 2021, Cymru a Lloegr - Office for National...
Supporting information for origin-destination data from Census 2021 in England and Wales, including how to access and use public, safeguarded and secure...
https://cy.wikipedia.org/wiki/Cyfrifiad_yr_Unol_Daleithiau_1850
Cyfrifiad yr Unol Daleithiau 1850 - Wicipedia
cyfrifiadyrwicipedia